His friend David, who teaches at U.C.L.A., drove him to the lecture and recounted the answer he had thought of for students campaigning against the war — that war is a grade in the schoolroom of man that cannot simply be rubbed out.
Date (happened)
c. 1967
estimated · probable · preferred
Why
Contested-anchor tightening: replaces the mere upper bound with a positive year-level claim, since the event is the same evening as the (year-agreed) telling.
Reasoning
David's retelling of his own answer to Neville happens in the car on the way to this very lecture ('coming down tonight'), so this event's happening date is the same evening as the telling. The telling date is contested between 1967-10-30 (possible) and 1967-09-11 (probable); both candidates agree only at year precision, so the happening is claimed at circa 1967, capped at the probable ceiling of the stronger delivery claim.
before 1967
bound · possible
Reasoning
Qualifying passage ids [536346] belong to telling lecture nids [1298]. Each listed lecture contributes the selected safe envelope year 1967 (MAX of its non-refuted delivery years); 1967 is the MIN across telling lectures.
Told
30 October 1967
stated · possible
30 October 1967
stated · possible
Why
Corrects the confidence of the told claim written by run `corpus v1 / phase3b` at delta 0 on this event; that claim is left standing per append-only. Ceiling rule #2132.
Reasoning
Confidence only; the date is not re-adjudicated and is left exactly as written. This claim is derived from the delivery claims of node 1298 and asserts `certain`, but the strongest claim that node carries is `probable`, so there is nothing for `certain` to inherit from. nid 1298 delivery claims: 1967-10-30 possible; 1967-9-11 probable. Walked back to `probable`, the ceiling. Whether the DATE is right is a separate question this row does not touch; if the evidence turns out to support more confidence, it will have to come from a source other than this node.